<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>数据统计</el-breadcrumb-item>
        <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
        <!-- 2.导入结构样式 -->
        <div id="main" style="width: 1300px;height:400px;"></div>
    </el-card>
  </div>
</template>

<script>
// 1.导入echarts
import * as echarts from 'echarts'
import _ from 'lodash'
export default {
    name:'report',
    data(){
        return{
            // option是需要合并的数据，和请求的数据相互合并
            options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [
            {
              boundaryGap: false
            }
          ],
          yAxis: [
            {
              type: 'value'
            }
          ]
        }
        }
    },
    async mounted(){
    // 3，基于准备好的dom，初始化echarts实例
      var myChart = echarts.init(document.getElementById('main')); 
    //   4.准备数据和配置项
      const{data:res} = await this.$http.get('reports/type/1')
    if (res.meta.status !==200) return this.$message.error('获取报表数据失败')
    //   将服务器返回的数据和data中的options进行合并
     const result =  _.merge(res.data,this.options)
    //   5.展示数据
    myChart.setOption(result)
    },

}
</script>

<style>

</style>